在三脚架结构中添加横向螺丝增加了Mason III辐射头骨折中的刚度:有限元素分析
Jared Walker1, Deniz Erbulut1, Paul R Rebgetz2
1University of Queensland, Saint Lucia, QLD, Australia; Herston Biofabrication Institute, Herston, QLD, Australia; Department of Orthopaedic Surgery, The Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia.
Journal of shoulder and elbow surgery
|April 10, 2024
概括
三脚架螺丝结构在生物力学上类似于放射性头部骨折的板. 添加第四个螺丝显著增加了结构刚性,为梅森III断裂提供了更好的稳定性.
科学领域:
- 骨科生物力学 骨科生物力学
- 有限元素分析的研究.
- 手术植入物技术的使用.
背景情况:
- 三脚脚螺丝配置提供了可比较的刚性,以横向板的辐射头骨折.
- 人们担心,当螺丝与断裂线相交时,结构故障存在.
- 有限元分析 (FEA) 用于评估在三脚架结构中的螺丝布置,用于Mason III辐射头骨折.
研究的目的:
- 为了评估三脚架螺丝结构在Mason III辐射头骨折的生物力学性能.
- 为了比较螺丝位置相对于断裂线.
- 为了评估额外的横向断片式螺丝的冲击.
主要方法:
- 从CT扫描数据开发了一个3D近距离半径模型.
- 模拟的梅森型III辐射头部骨折与三个碎片.
- 模拟了四个螺丝配置,不同的交点,包括一个额外的螺丝.
- 应用轴和切削力来模拟生理负荷.
- 分析了·米塞斯的压力和位移.
主要成果:
- 三脚架配置显示出植入物应力和刚性的边际差异,基于螺丝交叉点与骨折的距离.
- 与标准的三螺旋三脚架 (612 N/mm) 相比,采用额外的横向断片式螺丝的结构表现出明显更大的刚度 (2269 N/mm).
结论:
- 三脚脚螺丝结构表现出生物机械相似性,即使在辐射部骨折线上的螺丝交叉点.
- 额外的横向螺丝增强了模拟的三脚架配置中的结构刚性.
- FEA提供了关于优化螺丝放置的见解,以提高辐射头骨折固定中的稳定性.
关键词:
辐射式头部 辐射式头部生物机械的生物机械.有限元分析是有限元分析.固定方式 固定方式骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折,骨折.没有头的螺丝.稳定的稳定性 稳定的稳定性更多相关视频
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